Anderson County sheriff's Capt. Garland Major said investigators have found no signs of a crime, but it is not like Patel to leave and not contact his family and friends. Major said Patel's family owns some gas stations in the Upstate.

Patel is a manager at the Exxon at George Smith Mill Road and Clemson Boulevard in Anderson County, according to a report from Independent Mail coverage partner WSPA News Channel 7.

Deputies said leads have come in, and they worked those leads until the early morning hours Wednesday, according to the WSPA report.

Patel's son and daughter said they spoke to him over the weekend, and nothing seemed unusual.

As hours and days passed without word from him, she said, his children took on the role of parents, frantically calling him and hoping he would pick up, according to the WSPA report.

But he has not, said his son, Meek Patel.

The family has tacked up fliers at businesses.

Aniksha Patel said the situation is scary, noting, "You've got a lot of questions and a lot of stuff going on in your mind."

Her brother said, "I just want my dad back. That's all I want."

Chandrakant Patel last spoke with an employee at the Exxon around 6 p.m. Sunday, telling the worker he would be back to the station in a few hours. But Patel never returned to the store, according to the WSPA report.

He does not have any known medical problems, Major said.

Investigators are asking the public for help in their search.

Anyone with information is asked to call the Anderson County Sheriff's Office at 864-260-4400 or Anderson Area Crime Stoppers at 1-888-CRIME-SC.